Question

A 20% alcohol solution was mixed with pure alcohol at a ratio of 4:1. What is the percentage of alcohol in the new solution?

Answer 1

the answer is 36%

Explanation:

36%

because 20 % solution in 4/5 parts of the mmixture gives 80/5, if we have

100% solution in 1/5 parts of the mixture we get 100/5

the total would give 80+100/5= 36% solution

Answer 2

36%

Explanation:

20 % solution in 4/5 parts of the mmixture gives 80/5

100% solution in 1/5 parts of the mixture gives 100/5

total would give 80+100/5= 36% solution